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Mononuclear phagocyte thromboplastin, bacterial counts and endotoxin levels in experimental endogenous gram-negative
Abstract:
The relationship between mononuclear phagocyte thromboplastin activity, microorganisms and levels of endotoxin in peritoneal fluid and splanchnic and systemic circulation was evaluated during experimental endogenous gram-negative peritonitis in the rat. Significant rise in thromboplastin activity of mononuclear phagocytes was demonstrated in all three compartments. This newly synthesized thromboplastin is a trigger for important biologic systems such as the coagulation cascade, and thus may play a major role in the development of disseminated intravascular coagulation so often occurring in gram-negative sepsis. It probably also participates in the formation of fibrous intraabdominal adhesions. Aerobic and anaerobic microorganisms together with endotoxin were detected already 1 1/2 hours after induction of peritonitis, and subsequently were found to increase in parallel fashion. Determination of endotoxin is a rapid and seemingly reliable method for early detection of gram-negative infection and thus may be of clinical value.
Insights
In gram-negative peritonitis, mononuclear phagocytes increase thromboplastin activity, potentially causing disseminated intravascular coagulation. Endotoxin detection offers early diagnosis of this infection.
Area of Science:
- Microbiology
- Hematology
- Pathophysiology
Background:
- Gram-negative peritonitis involves microorganisms and endotoxin.
- Mononuclear phagocytes play a role in inflammatory responses.
- Thromboplastin activity is linked to coagulation.
Purpose of the Study:
- To investigate thromboplastin activity in mononuclear phagocytes during experimental gram-negative peritonitis.
- To correlate microorganism and endotoxin levels with thromboplastin activity.
- To assess the diagnostic potential of endotoxin determination.
Main Methods:
- Induction of endogenous gram-negative peritonitis in rats.
- Measurement of thromboplastin activity in mononuclear phagocytes from peritoneal fluid, splanchnic, and systemic circulation.
- Detection of aerobic and anaerobic microorganisms and endotoxin levels.
Main Results:
- A significant increase in mononuclear phagocyte thromboplastin activity was observed in all measured compartments.
- Microorganisms and endotoxin were detected early and increased in parallel.
- Thromboplastin synthesis by mononuclear phagocytes may trigger coagulation and adhesion formation.
Conclusions:
- Mononuclear phagocyte thromboplastin activity is elevated during gram-negative peritonitis and may contribute to disseminated intravascular coagulation and adhesions.
- Early detection of gram-negative infection is possible through endotoxin determination, offering clinical value.